101021011220 has 24 divisors (see below), whose sum is σ = 212241573600. Its totient is φ = 40389842592.

The previous prime is 101021011177. The next prime is 101021011253. The reversal of 101021011220 is 22110120101.

It is a super-2 number, since 2×101021011220² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1115450 + ... + 1202609.

It is an arithmetic number, because the mean of its divisors is an integer number (8843398900).

Almost surely, 2^101021011220 is an apocalyptic number.

101021011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101021011220 is an abundant number, since it is smaller than the sum of its proper divisors (111220562380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101021011220 is a wasteful number, since it uses less digits than its factorization.

101021011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2320247 (or 2320245 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 101021011220 its reverse (22110120101), we get a palindrome (123131131321).

The spelling of 101021011220 in words is "one hundred one billion, twenty-one million, eleven thousand, two hundred twenty".